基于机载激光雷达的公路横断面测量方法研究  

Research on the Measurement Method of Highway Cross-Sections Based on Airborne LiDAR

作　　者：陈振 CHEN Zhen(Wuhan Comprehensive Transportation Research Institute Co.,Ltd.,Wuhan,Hubei Province,430015 China)

机构地区：[1]武汉综合交通研究院有限公司,湖北武汉430015

出　　处：《科技资讯》2024年第9期43-45,共3页Science & Technology Information

摘　　要：机载激光雷达技术不仅可以测量地区地形图还可测量线路走廊带,也可以提供高精度的数字地面模型为后期设计做准备。同时,结合地物影像数据,增强了对地物的判别能力,在高速公路勘测设计等行业领域中有着广阔的应用前景和优势。基于此,采用机载雷达技术获取测区范围内原始点云数据,应用Terrasolid软件的一系列模块对点云数据进行处理。包括在TerraScan模块对激光点云进行滤波、分类,在TerraModeler模块中对滤波后的激光点云进行重组,内插生成DEM,最后获得的横断面高程精度为±0.12 m(检查限差为±0.31 m),满足高速公路勘测规范要求。Airborne LiDAR technology can not only measure both regional topographic maps and route corridor regions,but also provide high-precision digital ground models to prepare for later design,and combined with ground object image data,it enhances the ability to distinguish ground objects,which has broad application prospects and advantages in industries such as highway survey and design.Based on this,this article uses airborne radar technology to obtain raw point cloud data within the measurement area,applies a series of modules of Terrasolid software to process the point cloud data,which includes filtering and classifying the laser point cloud in the TerraScan module,recombining the filtered laser point cloud in the TerraModeler module and interpolating to generate the DEM,and finally the elevation accuracy of the obtained cross-section is ±0.12 m(the inspection limit of ±0.31 m),which meets the requirements of highway survey specifications.

关 键 词：机载激光雷达 点云数据 公路勘测 横断面图 

分 类 号：U412.24[交通运输工程—道路与铁道工程]